Plates of SoSo agar,, MacConkey's agar, and bismuth sulfite agar, 

 were streaked directly and from tetrathionate broth cultures but failed to 

 show any colonies resembling the Salmonella , Eberthella, or Shigella groups „ 



Wo enteric pathogens were encountered on any of the differential 

 mediae however, there was isolated from a female yellow jack an organism 

 having the cultural and biochemical characteristics of Salmonella 

 enteriditiso A typical aerogenes colony was isolated on Levine^s eosin 

 methylene blue agar which had been seeded from a tube of lactose brotho 

 This colony was transferred to a nutrient agar slant „ The culture was 

 purified by streaking on a tryptone glucose agar. Two morphologically dis- 

 tinct colonies were then obtained which were designated G9S and C9R° On 

 further cultural and biochemical studies it was found that culture C9S was 

 typical Aeroba'cter oxytocum and culture C9R a typical Salmonella enter id it is 



No colonies resembling Staphylococci were present on tryptone 

 glucose extract agar plates, and smears made from anaerobe medium failed to 

 reveal any organisms resembling the Clostridium group* 



The bacteria isolated comprising 58 specimens fell into 10 genera 

 and 27 species which were distributed as follows 1 



lo Micrococcus - I3 species o 

 2o Flavobacterium - 3 species . 

 3o Escherichia - 3 species » 

 It o Aerobacter - 2 specieso 



5„ Alcaligenes, Proteus , Pseud omonas , Salmonella , Bacillus , and 

 Sarcina - 1 species of eacho 



It is interesting to note that only 11 of the 27 species are 

 reported as being of marine origin,, Of these were J4 specimens of Micrococcus 

 perflavus s 2 of Micrococcus va rians , 2 of Alcaligenes viscosus , and 1 each 

 of Flavobacterium turcosum and Pseudomonas non-liquefaciens » Table 6 shows 

 the species of bacteria isolated from each fish sample,, 



m 



